Manufacture of envelopes, bags, or other containers



OR OTHER CONTAINERS Nov. 17, 1936.

A. NowcK MANUFACTURE OF ENVELOPES, BAGS,

Original Filed Oct. 7, 1955 4 Sheets-Sheet 1 A TTORNEYS A. NOVICK2,060,821

OR OTHER CONTAINERS Nov. 17, 1936.

MANUFACTURE OF ENVELOPES, BAGS 4 Sheets-Sheet 2 Original Filed 001;. '7,1953 INVENTOR Abra/7am Nay/ck.

ATTORNEYS Nov. 17, 1936. I v K 2,060,821

MANUFACTURE OF ENVELOPES, BAGS, OR :OTHER CONTAINERS Original Filed Oct.'7, 1953 4 Sheets-Sheet 3 Q INVENTQR Abra/7am Nov/ck.

W M M j ATTORNEYS A. NOVICK MANUFACTURE OF ENVELOPES, BAGS, OR OTHERCONTAINERS Nov. 17, 1936.

Original Filed Oct. 7,1935

4 Sheets-Sheet 4 A TTORNE Y6 Patented Nov. M, 1936 barn- "Yai ACTIURE oraNvEmPEs, times, an

@R CUNTAJINERS Application @ctoher 51, 1933, Serial No. 692,553

Renewed February 18, 1936 c claims.- (or. 164-64) 7 This inventionrelates to the manufacture of envelopes, bags or other containers from aweb of paper, cellophaneor. other suitable material. The invention is inthe nature of an improvement upon the invention disclosed and claimed inmy pending application Serial No. 654,121, filed January 30, 1933, forManufacture of envelopes, bags or other containers.

Like the invention of said pending application, this invention isconcerned particularly with the provision of means for producingcontainers of variable lengths from a web. v

According to the illustrated form of the present invention, containersof a selected length are produced by running the web at a selected-speedthrough the machine and causing the mechanism which severs the web tooperate upon the web at uniformintervals of time. With this arrangementdiflerent lengths of containers are produced, depending upon the amountof web that is passed under the severing cutters between successiveoperations thereof,

Certain of the mechanism, however, which is used to operate on the web,such, for example,

as the notching cutters for producing notches in the sides of the webpreliminary to the complete severance of theblank from the web, requiresto be in engagement with the traveling web for. a considerable period oftime. It is 30 necessary, therefore, that the linearspeed of suchmechanism be capable of temporary variation, so as tobe equal to theselected linear speed of the traveling web during actual contacttherewith. The present invention, therefore, provides a 35 mechanismwhich permits the notchingcutter or other operating mechanism to operateat a fixed number of revolutions per minute but provides for speedchanges during each such, revolution so that in that portionof eachrevolution in which 40 it is in contact with the web its speed will beequal to that of the web.v

The above stated objects are common to the present invention and to mypending application referred to above. I 4 45 In accordance withthepresent invention, provision is made of improved means for temporarilyaltering the speed. of the notching cutters or other operatinginstrumentalities, such means in; cluding. a driving train comprising apair of com axial gears, transmitting pinion constantly in mesh withsaid gears and means for rocking the pinion to and fro to increase. anddiminish the speed of the driven'gear of said pair asrequired. Provisionis made of means for automatically 5 rocking the transmission pinion atthe same points in each cycle of the notching cutters to increase ordiminish the speed of the notching cutters to the speed of the web. Suchmeans may desirably comprise a cam mounted on a uniformly driven shaft.made of means for quickly and conveniently subs'tituting one cam foranother in the organization. Other objects and advantages willhereinafter appear.

' partly broken away, disclosing particularly the driving means of thenotching cutters;

Figure 5 is a view similar to Figure 1 illustrating an altered geartrain for driving the web 25 feeding means; and

Figure 6 is a view in side elevation of a cam adapted to be used inrocking the transmission pinion mechanism.

The machine comprises frame members l whereby the other members to bedescribed are carried. A web 2 of envelope or bag material is fedbetween upper feed rollers 3 and lower feed rollers 4 which are fastrespectively upon upper and lower shafts 5 and 6, Gears I and 8 arefast, respectively, upon the shafts 5 and 6 and are in meshwith oneanother. The shaft 8 is accordingly driven from the shaft 5 through saidgears. The shaft 5 has fixed upon one of its ends'a gear 9 which, inaccordance with the arrangement illustrated in Figure 1, is in mesh witha gear H) which is journalled in an arm ll of a bellcrank I2. Thebellcrank I2 is pivoted upon a main shaft l3 and has its opposite arm I4provided with an arcuate slot l5. ShaftIB is 5 rotated by asprocket-and-chain drive, actuated by a source of power,said chain andsourceof power not being shown. A bolt l6 carried by the machine frameextends through the slot l5 and may be provided with a cooperating nutI! for 5 clamping the bellcrank in position to holdthe gear. Ill firmlyin mesh with the gear 9. The ear l0 runs in mesh with a gear l8 which isfast on theshaft 13. i The g'ear train described is eifective to controlthe length of web red durs Provision is further 5 ing a single cycle ofthe notching cutters. The substitution for gear 9 of a gear 9a ofdifferent size as illustrated in Figure 5 will obviously produce adifferent rate of feed for the web 2.

Regardless .of the train of gearing employed for driving the feed rolls3 and 4, the gear train from the main shaft to the notching cutters isalways the same so that the notching cutters act at uniform timeintervals. The gear I8 drives a gear l9 on a shaft 20. The gear I9drives a gear 2| which is fast upon a stub shaft 22. The gear 2| in turnmeshes with a gear 23, having external teeth, which is fixed upon a disc24. The disc 24 has a sleeve or hub portion 25 which is journalled in abearing 26 carried by the frame. The disc 24 also has secured upon it agear 21 having internal teeth.

The internal teeth of gear 21 mesh with pinions 28 which are journalledupon pins or stub shafts 29 carried by a rocker 30. The pinions do notnormally have any planetary movement but are rotated by the gear 21 andserve in turn to rotate a further gear 3|. The gear 3| is journalled inthe sleeve portion 25 of disc 24 and is keyed to drive a shaft 32 whichcarries notching cutters 33. The bed cylinder 34 is fast upon a shaft35. The shaft 32 may drive shaft 35 through gears 36 and 31 fast uponthe respective shafts.

When the rocker 30 is held stationary, the notching cutters willobviously be rotated at uniform speed. If such uniform speed of thenotching cutters is the same as the speed of the web, then there will beno occasion for rocking the rocker 30 to shift the pinions 28. In mostinstances, however, the speed of the web will be either greater or lessthan the normal or average linear speed of the notching cutters, and insuch case it will be desirable to increase or diminish the speed'of thenotching cutters temporarily to cause them to travel at the speed of theweb while in contact with it.

The rocker 30 is provided with a shaft or bearing portion 38 which is inaxial alignment with the shaft 32 and which is journalled in a bearingbracket 39. A crank 40 which is fast upon the shaft 38 carries a camfollower 4| which is controlled by a cam path provided in a cam 42.

-The cam 42 is mounted upon shaft 22 to rotate the cam axis which isadapted to receive the pin 44. The pin and bore form a drivingconnection between the cam and the shaft 22 and a nut 46 is threadableupon a reduced end portion 41 of i the shaft 22 to hold the cam 42 inplace.

When the normal or average speed of the notching cutter is the'same asthat of the web,-a cam 42 may be employed having a circular cam trackconcentric with the axis of the cam-so that the linear speed of thenotching cutters is uniform at all times. When the gear train employedfor driving the web feeding means produces a rate of web feeding slowerthan the average speed of the notching cutters, a suitable cam having acam track appropriate to thesituation maybe substituted. Such a cam 42ais illustrated in Figure 5. In this figure the cutters travel at averagespeed while the cam follower is running upon the concentric portion ofthe cam, but the speed is. de creased as the follower moves towards .thecenter of the cam and is afterwards increased as the follower passes thelow part and returns to the concentric portion. A cam of appropriatecontour is provided for each condition which will be encountered inactual practice. For example the cam 42b in Figure 6 is used totemporarily increase the speed of the cutter rollers 33.

I have described what I believe to be the best embodiments of myinvention. I do not wish, however, to be confined to the embodimentsshown, but what I desire to cover by Letters Patent is set forth in theappended claims.

I claim:

1. In a machine of the kind described, in combination, web feeding meansadapted to be driven at a selected uniform speed, a rotary member foroperating intermittently on the travelling web, means for driving saidoperating member at uniform average speed irrespective of the speed ofthe web, comprising co-axial internal and external gears, an interposedpinion and a shaft for driving one of said gears uniformly, a rocker armcarrying said pinion, and means for rocking said arm at a predeterminedpoint in each cycle to change the speed of the operating membertemporarily to that of the web.

2. In a machine of the kind described, in combinationj web feeding meansadapted to be driven at a selected uniform speed, a rotary member forintermittently engaging and operating upon the travelling web throughouta substantial period.

in each cycle, means for driving said member at uniform average speedirrespective of the speed of the web, comprising co-axial gears and apinion in mesh with said gears and swingable about the common axis ofthe gears while maintaining engagement with both of them, and means forswinging said pinion at a predetermined point in each cycle to changethe speed of the operating member to a uniform speed the same as that ofthe web throughout the period of engagement with the web.

3. In a' machine of the class described, the combination with a mainshaft of web feeding means, means for facilitating the connection of'the web feeding means to the main shaft in a selected gear ratio, arotary member for intermittently operating on theweb through asubstantial period in each cycle, means forming a permanent drivingconnection between the main shaft and said operating member, comprisinga pair of co-axial gears and a pinion swingable about the common axis ofsaid gears while maintaining operative engagement with both of them, acam operated from the main shaft for rocking the pinion to and fro atthe same points in each cycle of the operating member to cause theoperating member throughout its engagement with the web to travel at thespeed of the web, a cam shaft supporting the cam near an end of theshaft, and a cam follower for controlling the pinion, located at theside of the cam remote from said shaft end.

4. In a machine of the class described, the combination with a mainshaft of web feeding means, means for facilitating the connection of theweb feeding means to the main shaft for operation at a selected relativespeed, a rotary member for operating on the web throughout a substantialperiod in each cycle, means forming a permanent driving connectionbetween the main shaft and said operating member, comprising a pair ofco-axial gears and a pinion in mesh with said gears, a rocker carryingsaid pinion, said rocker including a bearing member disposed inaxialalignment with the common axis Bill forward end of the cam shaft infront of the other named parts and in cooperative relation to said camfollower so that a different cam can be used for each selected speed ofthe web; the arrangement being such that the attachment and removal ofthe cam is in no way obstructed by the other parts of the machine, saidcam and cam follower constituting means to rock the pinion and cause theoperating member to travel atthe speed of the web throughout the periodof its engagement with the web.

- 5. In a machine of the kind described, in combination, web feedingmeans for driving the web at selected uniform speeds comprising a primedriving member operating at uniform rotary speed, and means forfacilitating the connection of the web feeding means to the primedriving member in a selected gear ratio to determine the speed at whichthe web is fed, a rotary member for intermittently engaging andoperating upon the travelling web throughout a substantial period ineach cycle, a driving train for driving said operating member at uniformaverage speed from said prime driving member irrespective of the speedof the web, and for causing the speed of the operating member to bechanged from normal to the speed of the web at a predetermined point ineach cycleand to be maintained at the speed of the web throughout theperiod of its engagement with the web, said driving train comprising acam for causing said change of the speed from normal and means forfacilitating the inclusion in the driving train of a different cam foreach difierent speed of the web, each cam being appropriately shaped tosecure the stated result for a particular speed of the web.

6. In a machine of the class described, the combination with a mainshaft of web feeding means, means for facilitating the connection of theweb feeding means to the main shaft in a selected gear ratio to selectthe speedat. which the web is fed, a rotary member driven at uniformaverage speed for intermittently operating on the web through asubstantial period in each cycle, means forming a permanent drivingconnection between the main shaft and said operating member, comprisinga pair of co-axial gears and a pinion in mesh therewith, a pinionsupport journalled co-axially with the gears for swinging about thecommon axis to rock the pinion while maintaining the same in mesh withsaid gears,

a cam operating from the main shaft at uniform rotary speed, and a camfollower engaging-

